Not sure whether your ex wants you back or not?
Here are some sure signs!

There are of course the clear signs: your ex
tells you to stay away. Some people make the delusional mistake of assuming
they are just "playing hard to get". Don't assume this. If someone is telling
you to go away, don't insist! You will not be able to force someone to love
you, and if by chance they would be playing hard to get they'll stop if you
don't respond. Sometimes there are more subtle signs that can tell you whether
your ex wants you back:

Your ex keeps calling you. Even if they
call just to "check up" on you, if your ex calls (almost) as often as during
the relationship, chances are big that they are not letting go just yet.
For example, my good friend David had not seen his ex in almost a year. The
actual relationship was only about three months long. The ex had moved to
Germany, but as she was close to returning home she started calling David
regularly and wanted to "catch up".

Is your ex being nicer than
usual? Probably trying to win your sympathy back! You reverted to the
"chase" stage, where your ex feels they need to win you over. They might
do so by being very friendly or performing random acts of kindness.

If your ex is still going "relationship stuff",
or treating you as if you are still in a relationship, then you can be
fairly sure they want to back. This can include the way they talk to you,
flirt and openly discuss intimate details about themselves, you and your
relationship.

Is your ex cozying up to your friends or
even family? Then they are trying to reach your heart through the people
closest to you! It's a smart tactic: if they win over your friends and family,
then they instantly create a team of people in their favor who will hopefully
change your mind!

If the roles are reversed,
and you want your ex back, this is how to know whether they feel
the same way:

If your ex never returns your calls, its
possible that your ex needs some space. It may not mean that there is no
possibility of a reconciliation in the future. However that said, if this
continues then you can be fairly sure it isn't happening for the two
of you.

If your ex keeps coming back for sex but
doesn't stick around for anything else, then you are probably in a
sex-with-your-ex trap. If the only interaction between you is physical, then
you need to take some serious distance. Think about whether this is what
you want. If you genuinely want to give your relationship another try, the
thing you should keep for last is sex. When everything else is back on track,
that's the right time to get physically intimate. In any way, if you are
just having sex, it's not very likely your ex is really interested in reviving
anything but that part of the relationship.